Des Moines - As Republican candidates crisscross Iowa seeking last-minute support, the Democratic Party is ignoring the field and focusing on front-runner Mitt Romney.

Today in a Des Moines press conference the DNC turned to a former factory worker who lost his job in the 1990’s to attack what it calls Mitt Romney “job killing record” in the private sector.

Randy Johnson, a former union official at an Indiana paper plant that Bain Capital purchased and then sold after labor discussions broke down in 1995 said of Romney, “I really feel that he didn’t care about the workers.”

Johnson said he’s telling his story now to let voters decide for themselves whether Romney should be president.

Now employed by the United Steelworkers Union in Pittsburgh, Johnson admitted Bain likely acted legally in its dealings with Ampad, but he’s accusing Romney of getting rich at the expense of workers.

“They let Ampad go bankrupt and they made 100 million…tell me there’s nothing wrong with that.”

This is not the first time Johnson’s story has been used as a political weapon against Mitt Romney. In 1994 Democrats used Johnson’s story in television ads attacking Romney during his campaign against then incumbent Sen. Edward Kennedy.

Romney’s 14-year tenure at Bain has been a frequent target of attack from the Obama re-election team and his Republican rivals.

Romney claims during his time at the firm Bain created a net total of 100,000 jobs, but he’s also acknowledged not all of the investments have worked out.

“We invested in over 100 different businesses,” he said last month on MSNBC’s “Morning Joe,”  “and in those businesses, many were successful, added lots and lots of jobs. Some were not successful. That is the nature of free enterprise.”

On the campaign trail Romney argues that private sector experience is what’s needed to turn around the economy.